FIBRE TO FABRIC L2

If l_1=int_e^(e^2) dx/logx and l_2=int_1^2 e^x/xdx , then (A) l_1=2l_2 (B) l_1+l_2=0 (C) 2l_1=l_2 (D) l_1=l_2

The chord of contact of tangents from a point P to a circle passes through Qdot If l_1a n dl_2 are the length of the tangents from Pa n dQ to the circle, then P Q is equal to (l_1+l_2)/2 (b) (l_1-l_2)/2 sqrt(l1 2+l2 2) (d) 2sqrt(l1 2+l2 2)

Let L1 and L2 be two lines such that L_(2) : (x+1)/-3=(y-3)/2=(z+2)/1, L_(2) : x/1 = (y-7)/-3 = (z+7)/2 The point of intersection of L1 and L2 is

In a fabric, cotton and synthetic fibres are in the ratio of 2: 3. what is the percentage of cotton fibre in the fabric?

A: Bast fibres are collenchymatous fibres. R: Fibres are absent in secondary phloem.

Differentiate between Collagen fibres and elastin fibres

Assertion: Phloem fibres or bast fibres are made up of collenchymatous cells. Reason: Phloem fibres are generally found in primary phloem.

Store house of Ca^(+2) in muscle fibre is____

In one process of waterproofing, a fabric is expsoed to (CH_(3))_(2) SiCl vapour. The vapour reacts with (OH) groups on the surface of the fabric or with traces of H_(2) O to form waterproofing film of by the reaction Where n is large integer. The waterproofing film is deposited on the fabric layer upon layer. Each layer is 10 Å thich [the thickness of the (CH_(3))_(2) SiO group]. How much (CH_(3))_(2) SiCl_(2) is required to waterproof one side of a piece of a fabric, 1.0 m by 3.0 m , with a film 1000 layers thick? The density of the film is 1.0 g cm^(-3) . (Atomic weight of Si = 28 and Cl = 35.5 )

A p-n photodiode is fabricated from a semiconductor with band - gap of 2.8 eV . Can it detect a wavelength of 6000nm?